Professional UI/UX App Design Services

Transform your digital product vision into intuitive, conversion-focused interfaces that users love. Our UI/UX app design services combine strategic user research, elegant visual design, and iterative prototyping to create mobile and web applications that drive engagement, reduce development rework, and accelerate product-market fit for forward-thinking organizations.

Professional UI/UX designers collaborating on mobile app interface wireframes and prototypes

Our UI/UX App Design Services

End-to-end design solutions from research and strategy to pixel-perfect interfaces and developer handoff.

User Experience (UX) Design

Map user journeys, design information architectures, create wireframes, conduct usability testing, build user flows, prototype interactions, and validate designs with real users to ensure effortless, conversion-optimized experiences.

User Interface (UI) Design

Design high-fidelity interfaces, apply brand styling, create component libraries, establish design tokens, build spacing systems, ensure accessibility compliance, and produce developer handoffs for pixel-perfect implementation.

Interaction Design

Design micro-interactions, create animations, define transitions between states, build interactive prototypes, specify gesture controls, develop state changes, and craft delightful moments that elevate user engagement.

Website UX Design

Map complete user journeys, organize content structures, sketch wireframes, build interactive prototypes, conduct usability tests, and ensure accessibility compliance for web platforms that convert visitors into customers.

Website UI Design

Craft pixel-perfect web interfaces, design micro-interactions, build scalable design systems, ensure cross-platform consistency, create data visualizations, and produce comprehensive developer specifications.

Prototyping & Testing

Build clickable prototypes for investor demos and user testing, validate design decisions with real feedback, iterate rapidly based on insights, and de-risk development with proven user flows before a single line of code is written.

User-Centered Excellence

Design That Drives Business Results

We don't just make things look beautiful—we solve real business problems through strategic design. Our UI/UX app design services combine deep user research, conversion optimization tactics, and rapid iteration cycles to create digital products that users embrace and recommend. From intuitive onboarding flows to complex enterprise dashboards, we craft experiences that reduce support costs, increase engagement metrics, and accelerate your path to product-market fit.

Mobile app interface showcasing clean UI design with intuitive navigation and modern aesthetics
Proven Impact

Trusted by Innovation Leaders

From unicorn startups to global enterprises, we've designed digital products used by millions.

"They very quickly understood the kind of messaging that was important to us and how to translate that into a compelling visual experience. I can't recommend them enough!"

Keenan Johnson
Keenan Johnson

"Working with What If has been transformative — faster feature roll outs, reduced development costs, and a fantastic user experience. They quickly understood our vision and offered proactive ideas"

Kent Costello
Kent Costello

"The extremely high quality of outputs with fast turn around times and availability of team at short notice has been perfect for our requirements"

Ayush Banerjee
Ayush Banerjee

"They very quickly understood the kind of messaging that was important to us and how to translate that into a compelling visual experience. I can't recommend them enough!"

Keenan Johnson
Keenan Johnson

"Working with What If has been transformative — faster feature roll outs, reduced development costs, and a fantastic user experience. They quickly understood our vision and offered proactive ideas"

Kent Costello
Kent Costello

"The extremely high quality of outputs with fast turn around times and availability of team at short notice has been perfect for our requirements"

Ayush Banerjee
Ayush Banerjee

"They very quickly understood the kind of messaging that was important to us and how to translate that into a compelling visual experience. I can't recommend them enough!"

Keenan Johnson
Keenan Johnson

"Working with What If has been transformative — faster feature roll outs, reduced development costs, and a fantastic user experience. They quickly understood our vision and offered proactive ideas"

Kent Costello
Kent Costello

"The extremely high quality of outputs with fast turn around times and availability of team at short notice has been perfect for our requirements"

Ayush Banerjee
Ayush Banerjee
The What if Design Advantage

Why Choose What if Design?

Strategic design partners who understand the intersection of business goals, user needs, and technical constraints.

Speed

Lightning-fast iteration cycles with turnaround times as fast as 48 hours to weeks, not months.

Cost-Efficiency

Get senior-level design expertise at 3x less cost than hiring in-house designers.

Full-Service

End-to-end strategic collaboration from user research and UX design to UI implementation and developer handoff.

Data-Driven

User testing, heat maps, and validation ensure every design decision is backed by real insights.

Meet The Design Experts

Co-founders with deep expertise in design, architecture, and business growth.

Akhila Kosaraju

Co-founder

Before co-founding What if Design, Akhila was designing innovative LEED-certified buildings and leading urban interventions worth over $100M that impacted millions of people. With her architectural background from IIT Kharagpur, she brings a unique perspective to digital product design—understanding how users interact with complex systems and translating that into intuitive interfaces. Akhila specializes in user experience strategy, information architecture, and creating design systems that scale. Her work spans from designing products for healthcare unicorns like TATA1mg and Pristyn Care to reimagining customer experiences for government initiatives. At What if Design, she leads the strategic vision for projects, ensuring every design decision aligns with business goals while solving real user problems. Her mission-driven approach and architectural thinking enable her to craft digital experiences that are both beautiful and functionally robust.

Tejas Mahajan

Co-founder

Tejas brings a powerful combination of design expertise and business acumen to What if Design. Before co-founding the company, he drove business growth for OYO across three countries and ran training programs that reached 1,700+ people throughout India. This unique background enables him to bridge the gap between design excellence and measurable business outcomes. With his architecture degree from IIT Kharagpur and corporate experience, Tejas specializes in conversion-focused design, growth strategy, and creating pitch materials that resonate with investors and enterprise clients. At What if Design, he leads client relationships and ensures every project delivers tangible ROI—whether that's increased user engagement, successful funding rounds, or accelerated pilot sign-ups. His work has helped portfolio companies secure investment, launched nation-wide campaigns, and created digital products used by millions. Tejas's strategic mindset ensures designs don't just look impressive—they drive the business metrics that matter.

Frequently Asked Questions

What is the difference between UI and UX design?

UX (User Experience) design focuses on the overall user journey, information architecture, wireframes, and ensuring the product solves real user problems effectively. UI (User Interface) design focuses on the visual appearance—colors, typography, components, and pixel-perfect layouts. Both are essential: UX ensures it works right, UI ensures it looks right.

How long does a typical UI/UX app design project take?

Do you design for both iOS and Android platforms?

What deliverables will I receive at the end of the project?

How do you ensure the designs will actually work for our users?

Can you work with our existing brand guidelines?

How much does UI/UX app design cost?

Do you provide ongoing support after the initial design is complete?

Ready to Transform Your App Idea?

Schedule a free 30-minute consultation to discuss your project goals and explore how our UI/UX design services can help.

Mission-Driven Design

Awards and Recognition

Design Declares certification logo

Design Declares

Certified commitment to climate-conscious design practices

Trusted partner badge with unicorn startups

Trusted by Unicorns

Designed products for TATA1mg and Pristyn Care

Remote-first design team certification badge

Remote-First Excellence

Global team delivering world-class design from anywhere

Let's Design Something Exceptional Together

Share your project details and we'll respond within 24 hours with initial thoughts and next steps.

Contact Us Today

For immediate assistance, feel free to give us a direct call at You can also send us a quick email at team@whatifdesign.in